Home / 13,641.64-20,458.36-8,961.46

Finding the Fourth Proportional to 13,641.64, 20,458.36 and 8,961.46

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Solution

The fourth proportional to 13,641.64, 20,458.36 and 8,961.46 is: 13,439.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.64 : 20,458.36 = 8,961.46 : x
  2. Step 2: Convert to fraction form
    13,641.64/20,458.36 = 8,961.46/x
  3. Step 3: Cross multiply
    13,641.64x = 20,458.36 × 8,961.46
  4. Step 4: Simplify right side
    13,641.64x = 183,336,774.81
  5. Step 5: Solve for x
    x = 183,336,774.81/13,641.64
  6. Step 6: Final answer
    x = 13,439.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.